ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Position in PSIX — Power Solutions International, Inc.
CIK 1164508
BOSTON, MA
Position in PSIX
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$28,382,499
+$3,063,994 QoQ
Shares Held
466,204
+5.2% QoQ
Ownership
2.02%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2025
4 quarters on record
Voting authority
Sole 99%
Shared 0%
None 1%
Common Shares in PSIX Over Time
Shares Held
Position Value (USD)
Position in Specialty Industrial Machinery
Industrials · as of Jun 30, 2026ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $2,588,958,275 across 32 Specialty Industrial Machinery names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GEV |
GE Vernova Inc.
|
635,016 | $746,054,897 | |
| 2 | ITW |
Illinois Tool Works Inc
|
1,363,751 | $368,853,732 | |
| 3 | ROK |
Rockwell Automation, Inc
|
571,467 | $282,921,882 | |
| 4 | GNRC |
Generac Holdings Inc.
|
887,621 | $259,904,305 | |
| 5 | IEX |
Idex Corp /De/
|
717,081 | $162,741,532 | |
| 6 | AME |
Ametek Inc/
|
528,019 | $127,748,916 | |
| 7 | GGG |
Graco Inc
|
1,650,927 | $124,826,590 | |
| 8 | MIDD |
MIDDLEBY Corp
|
741,641 | $102,630,421 |
All Filings in PSIX
Export CSV
4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $28,382,499 | 466,204 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $25,318,505 | 443,096 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $31,929,848 | 325,085 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $4,734,705 | 73,202 | Shares | Defined | 2025-08-13 | |
| No filing history on record for this holder in this stock. | ||||||